Abstract
Cases tumble in Pakistan and Afghanistan but African outbreaks now threaten eradication.
MeSH terms
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Afghanistan / epidemiology
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Africa / epidemiology
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Disease Outbreaks*
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Humans
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Immunization Programs
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Pakistan / epidemiology
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Poliomyelitis / epidemiology*
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Poliomyelitis / prevention & control*
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Poliovirus / genetics
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Poliovirus / immunology
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Poliovirus Vaccine, Oral* / administration & dosage
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Poliovirus Vaccine, Oral* / adverse effects
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Poliovirus Vaccine, Oral* / genetics